/**
 * Copyright (c) 2011 Basil Shikin, VintageRadio Project
 * 
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 * 
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */
package org.vintagephone.model;


/**
 * This interface defines a listener for playback control commands.
 * 
 * @author Basil Shikin
 *
 */
public interface RadioControlListener 
{
	/**
	 * Knob that selects a song was moved
	 * 
	 * @param isDown True if next song is requested (knob was moved down)
	 */
	void songChanged( final boolean playNext );
	
	/**
	 * A button that selects different folder was pressed
	 * 
	 * @param buttonNumber Number of button
	 */
	void folderChanged( int buttonNumber );
	
	/**
	 * Volume knob changed
	 * 
	 * @param percent New volume (in percent)
	 */
	void volumeChanged( final int percent );
	
	/**
	 * Radio turned on or off
	 * 
	 * @param isOff True if new state is 'off'
	 */
	void offStateChaneged( final boolean isOff );
}
